Cable harness waterproof connection structure and cable

Abstract

The utility model relates to the technical field of cables, and provides a cable harness waterproof connection structure and a cable, and the cable harness waterproof connection structure comprises a contraction sleeve, a waterproof layer and a fastening sealing member. Wherein the shrinkage sleeve is arranged on a sheath stripping section of the cable in a sleeving manner, and at least part of the shrinkage sleeve is arranged on a sheath layer of the cable in a sleeving manner; the waterproof layer is arranged between the shrinkage sleeve and the sheath layer; the fastening sealing piece comprises a hard sleeve and a locking piece, the hard sleeve is arranged on the shrinkage sleeve in a sleeving mode, and the end, close to the sheath layer, of the hard sleeve is of a fork-shaped structure; the locking piece is arranged on the fork-shaped structure of the hard sleeve in a sleeving mode and used for locking and fixing the fork-shaped structure to the overlapping position of the shrinkage sleeve, the sheath layer and the waterproof layer. The waterproof sealing effect of the joint of the shrinkage sleeve and the sheath layer is improved through the waterproof layer, the sealing effect among the shrinkage sleeve, the waterproof layer and the sheath layer is further enhanced through the fastening sealing piece, the waterproof performance is effectively improved, and operation and assembly are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially relates to a cable harness waterproof connection structure and cable. BACKGROUND

[0002] When the medium voltage wind energy rubber jacketed cable is connected with the motor, the outer sheath of the end part needs to be stripped, the stripping length is about 5 meters, then the cable head is made on each wire core, so that each main wire core of the cable can be connected to the phase sequence of the motor, for the cable of the stripped sheath part, the cold shrink tube is used for protection, but due to the gap at the connection of the cold shrink tube and the sheath layer, the water vapor penetration is easy to occur by the resilience contraction lap joint of the cold shrink tube, and then the normal use of the cable and the connection stability of the cable harness accessories are influenced. SUMMARY

[0003] Therefore, the application provides a cable harness waterproof connection structure and cable with good sealing effect.

[0004] In the first aspect, the application provides a cable harness waterproof connection structure, which comprises:

[0005] A shrink sleeve is sleeved on the sheath stripping section of the cable and at least partially on the sheath layer of the cable.

[0006] A waterproof layer is arranged between the shrink sleeve and the sheath layer.

[0007] A fastening sealing member comprises a hard sleeve and a locking member, the hard sleeve is sleeved on the shrink sleeve, and one end of the hard sleeve close to the sheath layer is in a forked structure; the locking member is sleeved on the forked structure of the hard sleeve and is used for locking and fixing the forked structure at the overlapping position of the shrink sleeve, the sheath layer and the waterproof layer.

[0008] In some embodiments, the locking member comprises a locking nut sleeved on the hard sleeve, the part of the hard sleeve with the forked structure has a threaded structure, and the locking nut is screwed with the threaded structure to lock and fix the hard sleeve.

[0009] In some embodiments, the shrink sleeve is at least partially transparent.

[0010] In some embodiments, the transparent shrink sleeve is arranged at least in the area with a distance of greater than or equal to 50 cm from the side end of the cable close to the sheath stripping section.

[0011] In some embodiments, the cable harness waterproof connection structure further comprises a test piece arranged at the transparent shrink sleeve, the test piece being used for detecting water content.

[0012] In some embodiments, the test piece comprises a layer of water-induced color-changing material arranged at the transparent shrink sleeve.

[0013] In some embodiments, the cable harness waterproof connection structure further comprises a fixing layer sleeved between the waterproof layer and the shrink sleeve, the fixing layer being used for fixing the waterproof layer.

[0014] In some embodiments, the waterproof layer has a thickness of 3mm-5mm.

[0015] In some embodiments, the shrink sleeve is a cold shrink tube or a heat shrink tube.

[0016] In the second aspect, the application provides a cable comprising the cable harness waterproof connection structure according to the first aspect.

[0017] Compared with the prior art, the application has at least the following beneficial effects:

[0018] The application improves the waterproof effect of the connection by arranging the waterproof layer at the connection between the shrink sleeve and the cable sheath layer. Further, the hard sleeve with the forked structure is sleeved at the overlapping part of the shrink sleeve and the waterproof layer, the forked structure can meet the requirement of large diameter of the connection by divergence between the branches, and the forked structure of the hard sleeve is locked by the locking piece, effectively improving the sealing effect of the connection. In addition, the structure is simple during installation, effectively improving the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic view of a cable harness waterproof connection structure according to an embodiment of the application;

[0020] Figure 2 FIG. 4 is a structural schematic view of a hard sleeve according to an embodiment of the application.

[0021] In the drawings: 10 - sheath layer; 20 - shrink sleeve; 30 - waterproof layer; 40 - hard sleeve; 41 - forked structure; 50 - locking piece; 60 - test piece. DETAILED DESCRIPTION

[0022] The utility model will be explained in further detail in combination with the drawings, embodiments and examples. These embodiments and examples are only used for explaining the utility model and are not used for limiting the scope of the utility model. The purpose of providing these embodiments and examples is to make the understanding of the utility model disclosure more thorough and comprehensive. It should also be understood that the utility model can be realized in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various changes or modifications without departing from the connotation of the utility model, and the equivalent forms obtained are also within the protection scope of the utility model. In addition, in the following description, a large number of specific details are given to provide a more complete understanding of the utility model. It should be understood that the utility model can be implemented without one or more of these details.

[0023] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" and "provided" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In the utility model, "optionally", "optional" and "optional" mean that it can or can not be, that is, it means to select any one from the two parallel schemes of "have" or "have". If there are multiple "optional" in a technical solution, if there is no special description and no contradictory relationship or mutual restriction, each "optional" is independent.

[0026] In the utility model, the technical features described in an open manner include the closed technical solution consisting of the listed features, and also include the open technical solution containing the listed features.

[0027] The terms "first", "second", and the like in the utility model are only used for description purposes, and cannot be understood as indicating or implying relative importance or quantity, nor can they be understood as implying the importance or quantity of the indicated technical features. Moreover, "first", "second", and the like only serve the purpose of non-exhaustive enumeration description, and should be understood as not constituting a closed limitation on the quantity.

[0028] All the documents mentioned in the utility model are cited as references in the utility model, just as each document is cited as a reference individually. Unless conflicting with the utility model purposes and / or technical solutions of the utility model, the cited documents are cited in their entirety and purposes. When the utility model involves cited documents, the definitions of relevant technical features, terms, nouns, phrases, and the like in the cited documents are also cited. When the utility model involves cited documents, the examples and preferred modes of the cited relevant technical features can also be incorporated into the utility model as references, but are limited to the implementation of the utility model. It should be understood that when the cited content conflicts with the description in the utility model, the utility model is given priority or is modified according to the description in the utility model.

[0029] In the conventional technology, the resilience of the cold shrink tube is directly utilized to wrap on the sheath layer to realize the sealing of the connection, or a layer of waterproof cement is arranged at the connection to strengthen the sealing effect of the connection. However, the working environment of the wind power cable is complex, and most of the time, the cable is in a humid environment such as mountains, forests, and fields, and there is much water vapor on the surface of the cable, which is easy to penetrate into water at the connection, and even causes problems such as the falling off of the waterproof cement, affecting the use of the cable.

[0030] Based on this, the first aspect of the present application provides a cable harness waterproof connection structure, the cable harness waterproof connection structure includes a shrink sleeve 20, a waterproof layer 30 and a fastening sealing piece.

[0031] The shrink sleeve 20 is sleeved on the sheath stripping section of the cable, and at least partially sleeved on the sheath layer 10 of the cable. The waterproof layer 30 is arranged between the shrink sleeve 20 and the sheath layer 10. The fastening sealing piece includes a hard sleeve 40 and a locking piece 50, the hard sleeve 40 is sleeved on the shrink sleeve 20, and the end of the hard sleeve 40 close to the sheath layer 10 is in a fork structure 41; the locking piece 50 is sleeved on the fork structure 41 of the hard sleeve 40, and is used for locking and fixing the fork structure 41 at the overlapping position of the shrink sleeve 20, the sheath layer 10 and the waterproof layer 30.

[0032] The application improves the waterproof effect of the connection by arranging the waterproof layer 30 at the connection between the shrink sleeve 20 and the sheath layer 10 of the cable. Further, the hard sleeve 40 with the fork structure 41 is arranged at the overlapping part of the shrink sleeve 20 and the waterproof layer 30, wherein the fork structure 41 is diverged between the forks, thereby meeting the requirement of large diameter of the connection, and the fork structure 41 of the hard sleeve 40 is locked by the locking member 50, effectively improving the sealing effect of the connection. In addition, the structure is simple during installation, effectively improving the installation efficiency.

[0033] The application improves the sealing effect of the waterproof layer 30 between the sheath layer 10 and the shrink sleeve 20 by mechanically pressing the shrink sleeve 20 and the waterproof layer 30 at the connection by the fastening sealing member. Moreover, the waterproof layer 30 can be effectively prevented from falling off under the action of the fastening sealing member.

[0034] It can be understood that, due to the existence of the waterproof layer 30, the hard sleeve 40 has the fork structure 41 at the position of the waterproof layer 30, which can be diverged to wrap the connection, and then be locked and fixed by the fastening sealing member. Further, the length of the fork structure 41 and the size of the locking member 50 can be adjusted according to the diameter of the position of the waterproof layer 30.

[0035] It should be noted that the diameter of the hard sleeve 40 is greater than the diameter of the shrink sleeve 20 after shrinking, which can meet the requirement of sleeving the hard sleeve 40 outside the shrink sleeve 20.

[0036] In some embodiments, the locking member 50 includes a locking nut sleeved on the hard sleeve 40, the part of the hard sleeve 40 with the fork structure 41 has a threaded structure, and the locking nut is screwed with the threaded structure to lock and fix the hard sleeve 40.

[0037] The application adopts the locking nut as the locking member 50, which is matched with the thread arranged at the part of the fork structure 41 of the hard sleeve 40, can strengthen the folding effect of the part of the fork structure 41 during locking, and has the characteristics of good stability and easy operation by adopting the screwing and fixing mode of the locking nut matched with the thread.

[0038] In some embodiments, the shrink sleeve 20 is at least partially transparent. The application adopts the transparent shrink sleeve to observe the internal condition of the cable through the shrink sleeve 20, and can judge whether the sealing has failed by whether water droplets are condensed on the transparent shrink sleeve or whether the cable is damaged by internal discharge.

[0039] In some embodiments, the transparent shrink sleeve is arranged at least at a region of the cable which is >50 cm away from the end of the cable adjacent to the jacket stripping section. The transparent shrink sleeve is arranged as above because internal discharge is prone to occur at this section, and thus the transparent shrink sleeve can be used for observation to avoid the problem of cable failure caused by serious discharge.

[0040] In some embodiments, the cable harness waterproof connection structure further comprises a test piece 60 arranged at the transparent shrink sleeve, and the test piece 60 is used for detecting water content. The test piece 60 is arranged at the transparent shrink sleeve, and the test piece 60 can detect the water content in the shrink sleeve 20 during use, so that the internal water vapor condition can be understood according to the test condition of the test piece 60, and then it is judged whether the sealing structure is failed. The detection method is simple, and the problem that water vapor penetration has occurred but still cannot be observed is effectively avoided.

[0041] In some embodiments, the test piece 60 comprises a layer of water-induced color-changing material arranged at the transparent shrink sleeve. Optionally, the water-induced color-changing material can be selected from anhydrous copper sulfate or anhydrous cobalt chloride.

[0042] In some embodiments, the cable harness waterproof connection structure further comprises a fixing layer (not shown in the figure) sleeved between the waterproof layer 30 and the shrink sleeve 20, and the fixing layer is used for fixing the waterproof layer 30. Optionally, the fixing layer can be a heat shrink tube or a cold shrink tube. In addition, the fixing layer can be removed after the waterproof layer 30 is shaped or can be retained. The waterproof layer 30 arranged is coated by the fixing layer to avoid deformation of the waterproof layer 30 during arrangement, which affects the coating effect of the waterproof layer 30.

[0043] In some embodiments, the thickness of the waterproof layer 30 is 3mm-5mm, for example, it can be 3.0mm, 3.2mm, 3.4mm, 3.6mm, 3.8mm, 4.0mm, 4.2mm, 4.4mm, 4.6mm, 4.8mm or 5.0mm.

[0044] In some embodiments, the material of the waterproof layer 30 can be a high molecular moisture-proof plugging agent, a nitrile rubber or a waterproof rubber.

[0045] In some embodiments, the shrink sleeve 20 is a cold shrink tube or a heat shrink tube.

[0046] Exemplarily, a method for assembling the above-mentioned cable harness waterproof connection structure is provided, comprising the following steps:

[0047] A waterproof layer 30 is arranged at the edge of the jacket layer 10 of the cable adjacent to the stripping section, and waterproof cement can be used and a fixing layer is used for coating and shaping fixation;

[0048] The shrink sleeve 20 is sleeved on the stripped section of the cable, and is partially sleeved on the portion of the sheath layer 10 having the waterproof layer 30, and is shrink-wrapped;

[0049] The hard sleeve 40 is sleeved on the cable, and the forked structure 41 is partially covered on the overlapping portion of the sheath layer 10, the waterproof layer 30 and the shrink sleeve 20, and the forked structure 41 is locked and fixed by the locking member 50, for example, a locking nut is screwed on the thread of the forked structure 41.

[0050] The second aspect of the present application provides a cable, which comprises the cable harness waterproof connection structure according to the first aspect.

[0051] In some embodiments, the cable comprises a core, and an insulating layer and a sheath layer 10 are sequentially sleeved on the outside of the core.

[0052] In summary, the present application improves the waterproof effect of the connection portion by arranging the waterproof layer 30 at the connection portion between the shrink sleeve 20 and the sheath layer 10 of the cable. Further, the hard sleeve 40 with the forked structure 41 is sleeved on the overlapping portion of the shrink sleeve 20 and the waterproof layer 30, the forked structure 41 is diverged between the branches, so as to meet the requirement of large diameter of the connection portion, and the forked structure 41 of the hard sleeve 40 is locked by the locking member 50, so as to effectively improve the sealing effect of the connection portion. In addition, the structure is simple during installation, and the installation efficiency is effectively improved.

[0053] The technical features of the above embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0054] The above embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that, for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A cable harness waterproof connection structure, characterized in that: The cable harness waterproof connection structure includes: A shrink sleeve, which is sleeved over the jacket stripping section of the cable and at least partially sleeved over the jacket layer of the cable; a waterproof layer, the waterproof layer being disposed between the shrink sleeve and the sheath layer; The fastening seal includes a hard sleeve and a locking piece. The hard sleeve is sleeved on the shrink sleeve, and the end of the hard sleeve close to the sheath layer is a fork-shaped structure; the locking piece is sleeved on the fork-shaped structure of the hard sleeve and is used to lock and fix the fork-shaped structure at the overlapping part of the shrink sleeve, the sheath layer and the waterproof layer.

2. The cable harness waterproof connection structure according to claim 1, characterized in that: The locking member includes a locking nut sleeved on the hard sleeve. The portion of the hard sleeve that is in the fork-shaped structure has a threaded structure. The locking nut is screwed together with the threaded structure to lock and fix the hard sleeve.

3. The cable harness waterproof connection structure according to claim 1, wherein: The shrink sleeve is at least partially a transparent shrink sleeve.

4. The cable harness waterproof connection structure according to claim 3, characterized in that: The transparent shrink sleeve is at least arranged in a region with a distance of ≥50 cm from the end of one side of the cable close to the sheath stripping section.

5. The cable harness waterproof connection structure according to claim 3, wherein: The cable harness waterproof connection structure further includes a test piece, which is arranged at the transparent shrink sleeve and is used to detect water content.

6. The cable harness waterproof connection structure according to claim 5, characterized in that: The test piece includes a layer of hydrochromic material disposed at the transparent shrink sleeve.

7. The cable harness waterproof connection structure according to claim 1, wherein: The cable harness waterproof connection structure further includes a fixing layer, which is sleeved between the waterproof layer and the shrink sleeve and is used to fix the waterproof layer.

8. The cable harness waterproof connection structure according to claim 1, wherein: The thickness of the waterproof layer is 3mm~5mm.

9. The cable harness waterproof connection structure according to any one of claims 1 to 8, characterized in that: The shrinkable tube is a cold shrinkable tube or a heat shrinkable tube.

10. A cable, characterized in that: The cable comprises the cable harness waterproof connection structure according to any one of claims 1 to 9.

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